1. Mississippian and Pennsylvanian stratigraphy in southwest Montana and adjacent Idaho Publication/Creation: [Washington, D.C.] : U.S. G.P.O. ; Alexandria, VA : For sale by the Distribution Branch, U.S. Geological Survey, 1985 Resource Type: Book Access & Availability: Loading
2. Mississippian and Pennsylvanian stratigraphy in southwest Montana and adjacent Idaho Publication/Creation: [Reston, Va.] : Department of the Interior, U.S. Geological Survey, 1985 Resource Type: Book Access & Availability: Loading